What are the causes of the loss of white water from the paper machine? How to reduce the loss of paper white water?

The causes of the loss of white water from the Paper Machine are: (1) The density of the transfer box is lower than the dryness of the wet roll paper. The consistency of the slurry in the mixing box is generally about 3%, while the dryness of the roll paper wet roll paper is about 10% (most of which is below 10%). From the slurry balance, it is generally known that each ton of wool paper Lost about 21 tons of white water. Dry paper machine roll paper wet paper dryness between 12% -24%, per ton of paper in the net portion of the excess white water between 25-29 tons. (2) Fill the clean water (filling quantity and concentration depending on the amount of filler) into the continuous filling after the head box. (3) Add fresh water to the tailings tank of the deslagger and dilute the tailings. (4) Eliminating clean water sprayed from the front net box foam or adding water clearing paper to the front net box. (5) Flush the rotary screen water. This part of the water is used in a large amount. According to the determination, a 1575 mm circular wire paper machine in a factory has a water wash volume of 20 m/h on a net cage, and individual plants have one paper. Two washing nets are installed on the cage, which is the main reason for the loss of white water in the rotary screen machine. (6) The clean water from the wet paper edges of the Fourdrinier Paper Machine into the voltaic roller pits on both sides of the net. The measures to reduce the loss of white water from the paper machine are: (1) Control the slurry concentration in the slurry box from 3% to 3.5% and use whitewater to adjust the concentration of the slurry pool. (2) Whitewater is used to adjust the concentration of the filler, to thin the tailings of the deslagger, and to adjust the paper banners in the front headbox. (3) Select a suitable nozzle to reduce the amount of defoaming water, or use a defoamer to eliminate the headbox foam. (4) Install a pressurized mobile washing device to reduce water spray holes and save a lot of water. (5) Separately use white water under the long wire paper machine net. First, make full use of the thick water under the net to dilute the slurry from the mixing box, and then add enough thin water to the vacuum suction box on the net. The thin white water removed by the vacuum suction box and the vacuum roller is collected in the white water storage tank for crushing the broken paper, diluting the pulp after beating, and adjusting the concentration of the filler. After achieving the above measures, sedimentation or air flotation and other methods are used to recover the slurry and filler in the excess white water, and a multiplier effect can be obtained.